DS Robotics 2 Channel DC 5V Relay Module for Arduino UNO R3 DSP ARM PIC AVR STM32 Raspberry Pi with Optocoupler Low Level Trigger Expansion Board (Pack of 4 ) Micro Controller Board Electronic Hobby Kit

Specific Parameters: ?The module Operating voltage 5V; ?Using SMD optocoupler isolation, driving ability, stable performance; trigger current 5mA; ?The module uses genuine quality relay, normally open interfaces Maximum load: AC 250V/10A, DC 30V/10A; ?Fault-tolerant design, even if the control line is broken, the relay will not operate; ?The module can be high or low by a jumper setting trigger; ?The interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient;